66472742 has 32 divisors (see below), whose sum is σ = 118917120. Its totient is φ = 27267840.

The previous prime is 66472741. The next prime is 66472751. The reversal of 66472742 is 24727466.

It is a junction number, because it is equal to n+sod(n) for n = 66472696 and 66472705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66472741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41309 + ... + 42887.

It is an arithmetic number, because the mean of its divisors is an integer number (3716160).

Almost surely, 2^66472742 is an apocalyptic number.

66472742 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

66472742 is a deficient number, since it is larger than the sum of its proper divisors (52444378).

66472742 is a wasteful number, since it uses less digits than its factorization.

66472742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716.

The product of its digits is 112896, while the sum is 38.

The square root of 66472742 is about 8153.0817486396. The cubic root of 66472742 is about 405.0865882027.

The spelling of 66472742 in words is "sixty-six million, four hundred seventy-two thousand, seven hundred forty-two".